You should also check out Nikola Tesla (if you have not already).
He also truly was a genius in the electro-magnetic field. Actually many of the inventions that made Thomas Edison famous was stolen by Tesla during their famous Battle of Currents.

If you find Edison interesting, i just know you will find Tesla fascinating! Geniuses truly are a exciting subject to explore.
Just wanted to share my favorite quote from Tesla with you @kingvelt :

" It is paradoxical, yet true, to say, that the more we know, the more ignorant we become in the absolute sense, for it is only through enlightenment that we become conscious of our limitations. Precisely one of the most gratifying results of intellectual evolution is the continuous opening up of new and greater prospects. " - Nikola Tesla

Great post and a great quote from Edison, sharing intelligent truth is always appreciated!